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      02-18-2013, 11:34 AM   #35
Dextrek
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Drives: 335i
Join Date: Sep 2011
Location: Michigan

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I am doing the test myself as well. Currently I have JB4 G5 ISO, but looking to upgrade to Cobb BMS back end tune. I want to see how that compares to the Cobb Protune. Anyone have any experience with both? or seen any comparisons?
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